CVE-2026-44346
High
Description
BentoML is a Python library for building online serving systems optimized for AI apps and model inference. Prior to 1.4.39, a malicious bentofile.yaml containing a newline-injected value in envs[*].name produces unquoted RUN directives in the BentoML-generated Dockerfile. When the victim runs bentoml containerize on the imported bento, those RUN directives execute on the host during docker build. This vulnerability is fixed in 1.4.39.
SeverityHigh
CVSS8.8
Exploit probability—
ProductBentoml
PublishedMay 27, 2026
First seenMay 27, 2026
Weakness typeCWE-78OS command injectionCWE-94Code injection
How to fix
Update
- bentoml bentoml1.4.39 or later
- bentoml1.4.39 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| bentoml bentoml | v < 1.4.39 | 1.4.39 |
| bentomlPyPI | v < 1.4.39 | 1.4.39 |
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